Production of creosote mixture for impregnating wood



ISIDORE FRANCOIS VERMEIRE, OF BRUSSELS, BELGIUM.

PRODUCTION OF CREOSOTE MIXTURE FOR IMPREGNATQNG WOOD.

lilo Drawing.

To all whom it may emwem:

Be it known that I, ISIDORE FRANg Is VERMEIRE, subject of the King of Belgium, residing at Brussels, 22 Rue des Fabriques, have invented certain new and useful Tm rovements Relating to the Production of reosote Mixture for Impregnating Wood,

of which the following is a specification.

The present invention relates to a process by means of which thesoil of creosote may be prepared and purified in such a manner as to be capable of being used directly for the impregnation of wood at ordinary pressure, that is to say. without being passed through apparatus which has been used hitherto, wherein the wood was subjected either to a vacuum andto injection'under pressure, or to an injection under pressure subsequent to a vacuum adapted toeliminate the excess of creosote.

Expe1 'ience has shown that when the oils of creosote are subjected to agitation in.

the presence of small quantities of bodies such as phenols, with which may be mixed other bodies such as tar, the light oils of tar and benzol, the mixture being agitated and then filtered, oils of creosote are obtained which effectively penetrate the pores of the wood which it is desired to impregnate.

The details of the process, forming the a subject of the invention, will be seen clearly from the example given below Example. v

The mixture is made as follows Part0- Creosote "70.0 Phenol (commercial) at' 32% 6.0 40 Goal tar 9.5

Light oil of coal 8. Benzol 6.5

This mixture is treated in a trough, provided with suitable devices,- for about two hours.

During this treatment, the ammonia con-. tained as animpurity in the coal tar is com- 5 pletely eliminated.

Application filed December 12, 1922. Serial No. 606,542.

this mixture to agitation, and then filtering atmospheric pressure.

In certain cases the creosote may be heated to about 100 (3., but it is' also possible to carry out the process at the ordinary temperature.

Claims:

1. A method of preparing oils of creosote for the'impregnation of wood, comprising, mixing oils of creosote with a small proportion of phenols and hydrocarbons, subjecting the mixture thus obtained to agitation, and then filtering the mixture.-

v 2. A method according to claim 1, said hydrocarbons being coal tar, light oil of tar, and benzol.

3. A method according to claim 1, filtering being efi'ected by means of coke. 4. A method according to claim 2, filter-v ing being effected by means of coke.

5. A method according to claim 3, the impregnation being'efiected at ordinary atmospheric temperature. 35

6. A method according to claim 4, the impregnation being efiected at ordinary atmospheric temperature.

7. A method according to claim 5, the impregnation beingefi'ected at temperaturesas 99 high as 100 C.

8. A method according to claim 6, the impregnation being efl'ected at temperatures as high as 100 C.

9. The product obtained by mixing approximately 70 parts of creosote with, approximately, 6 parts of commercial phenol at 32%, 9.5 parts of tar, 8 parts of light tar oil and 6.5 parts of benzol, subjecting i't'through ooke, substantially as described.

. 10.- A product containing approximately 70 parts of creosote, and, approximately, 6

parts of commercial phenol at 32%, 9.5

5 parts of tar, 8 parts of light tar oil, and

6.5 parts of benzol.

roduct composed approximately by welg t, of creosote, and approximately by Weight, of amixture of phenols and hydrocarbons. 10 In testimony whereof I have signed my name to this specification.

llSlDORlE FRANQQKS VERMEIRE.

Witnesses: a

LEONARD LEVA, MARE!) DEERENNE. 

